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CVE-2026-31772

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync hci_le_big_create_sync() uses DEFINE_FLEX to allocate a struct hci_cp_le_big_create_sync on the stack with room for 0x11 (17) BIS entries. However, conn->num_bis can hold up to HCI_MAX_ISO_BIS (31) entries — validated against ISO_MAX_NUM_BIS (0x1f) in the caller hci_conn_big_create_sync(). When conn->num_bis is between 18 and 31, the memcpy that copies
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9b57f5f48e84449f737b5f3dc31cf2d03d7acb8a485516d3aad5de478ecdbb3e
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessT…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f5d446624345d309e7a4a1b27ea9f028d6a8c5d9","status":"affected","version":"91d19383b7ed035e22165ae5c836e50bb9f95fbe","versionType":"git"},{"lessThan":"aba0aea354015794e8312dd7efe726967e58aefe","status":"affected","version":"42ecf1947135110ea08abeaca39741636f9a2285","versionType":"git"},{"lessThan":"eaf32002ca7b1ba51c9f140991fd9febe6de79f0","status":"affected","version":"42ecf1947135110ea08ab…

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"affected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.13"},{"lessThan":"6.13","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.81","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.22","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.12","versionType":"semver"},{"lessT…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/bluetooth/hci_sync.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"f5d446624345d309e7a4a1b27ea9f028d6a8c5d9","status":"affected","version":"91d19383b7ed035e22165ae5c836e50bb9f95fbe","versionType":"git"},{"lessThan":"aba0aea354015794e8312dd7efe726967e58aefe","status":"affected","version":"42ecf1947135110ea08abeaca39741636f9a2285","versionType":"git"},{"lessThan":"eaf32002ca7b1ba51c9f140991fd9febe6de79f0","status":"affected","version":"42ecf1947135110ea08ab…
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"baseScore":7.8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/metrics/0/cvssV3_1

Source references

4 source assertions
{"url":"https://git.kernel.org/stable/c/aba0aea354015794e8312dd7efe726967e58aefe"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/references/1
{"url":"https://git.kernel.org/stable/c/bc39a094730ce062fa034a529c93147c096cb488"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/references/3
{"url":"https://git.kernel.org/stable/c/eaf32002ca7b1ba51c9f140991fd9febe6de79f0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/references/2
{"url":"https://git.kernel.org/stable/c/f5d446624345d309e7a4a1b27ea9f028d6a8c5d9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:24f03526b5e1d84de6082d6b2171181fb558ee6d5b27e42f520b95ecedae428f · sha256:6ee71bfcbe7d0930… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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